This was designed to hold a Macbook Pro 2017 15" vertically on the side of a wood desk. It should work for any recent 15" Macbook Pro that has USB-C ports.
I used 4 5×20 mm pan head screws to mount it to the desk.
My desk is 1.25" (32mm) thick so the holder part protrudes up that far past the mount.
I used PETG since laptops produce a decent amount of heat. I also used 20% infill just to stay on the safe side since this is an expensive machine I'm supporting here. It seems really solid.
The author hasn't provided the model origin yet.